Sheet delivery device for cylinder printing presses



R STUSSI Dec. 24, 1935.

SHEET DELIVERY DEVICE FOR CYLINDER PRINTING PRESSES Filed Jan. 51, 1934.7izvemtor kzzdolf i Z2 $9 fiittorney Patented Dec. 24, 1935 UNITEDSTATES PATENT OFFICE SHEET DELIVERY DEVICE FOR CYLINDER PRINTING PRESSESRudolf Stiissi, Glarus, Switzerland, assignor to DruckmaschinenAktiengesellschaft, Glarus,

Switzerland 1 Claim.

Among the known devices for delivering the sheets from cylinder printingpressesthere are such constructional forms in which the printed sheetsare taken off from the impression cylinder by means of eithercontinually or periodically circulating chain grippers by which thesheets are then further conveyed.

For supporting the sheets during the leadingout action those knowndevices are equipped with disks adjustable in the transverse directionof the sheets so as to render possible adjusting said disks to suchplaces of the sheets where there is no printed matter. If no such placescrust, the disks come in contact with printed matter and it may be thatportions thereof are monked and obliterated.

The object of the present invention is to obviate said drawback, and Iattain the purpose in view by connecting the said disks, or equivalentmembers, with the chains in such a manner that they can be adjusted inthe transverse direction as well as in the longitudinal direction of thesheet whereby it is rendered possible in the simplest manner to make thedisks contact with the sheets always where there is no printed matter.

It is suited to the purpose in view to connect the disk supporting axlesand the chains with one another in such a manner that said axles can bedetached from the chains and attached to other portions of them, as bestsuited for said purpose. The chains may .have supporting pivots for saidaxles so as to render possible to give the axles other positions wherebyalso the position of the disks in the longitudinal direction of thesheets can be varied. The disks can, however, nevertheless be shiftedalso transversely with respect to the sheets, as required.

The invention is illustrated diagrammatically and by Way of example onthe accompanying drawing in which Figure 1 is a side-view of thearrangement and combination of parts constituting the invention, andFigure 2 is a plan of the same.

On the drawing, b is a printed sheet which has been taken ofi from theimpression cylinder l by means of the grippers 2 that are connected withtwo chains 3 traveling either continually or periodically. Only a partof one of the chains is shown in Fig. 1, whereas in Fig. 2 portions ofboth chains are shown. The chains run over chain wheels 4 (Fig. 1)

The grippers are attached to a transverse rod 1 which is connected withthe chains 3. When the rod 1 with the grippers 2 arrives at the otherforming there pivots 8 upon which the axles 9 carrying the supportingdisks ID for the sheets are supported. The disks II] are axiallyshiftable in known manner upon said axles, and these latter can bedetached from the pivots 8 supporting them at the time being, and can beattached to other pivots whereby the position of the disks II] can bevaried in the longitudinal direction of the sheets, as requisite for thepurpose in view.

In order to render possible detaching the axles 9 from the pivots 8, andattaching them thereto, every axle 9 has at one end an axial bore inwhich a bolt II can be shifted. The outer end of each bolt I I isprovided with a sleeve I2 which can receive in it any one of the pivots8, as appears from the lower portion of Fig. 2. The respective pivot andthe respective sleeve are kept in engagement with one another by meansof a helical compressive spring I3 inserted into the respective bore.Also the other end of each axle 9 is providedwith a bore I 4, (Fig. 2)receiving one of the pivots 8. It is obvious that any one of said axles9 can be disconnected from the chains 3, or from the respective pivots 8respectively, either by shifting the axle 9 concerned towards theappertaining sleeve l2 or by shifting this sleeve l2 towards theappertaining axle 9 when in either case the respective spring 13 will becompressed so as to permit detaching the axle from the chains.

I wish it to be understood that I do not limit myself to theconstructional form illustrated in the drawing merely by way of example.Various modifications all lying within the scope of the invention arepossible.

I claim:

A sheet delivery device for cylinder printing presses, comprising, incombination with two endless chains, means for driving said chains,grippers connected to said chains and adapted to seize a printed sheet,pivots on said chains and projecting inwardly, transverse bars of lesslength than the space between said two chains, an axial bore at each endof said transverse bars, one of said bores adapted to engage a pivot ofone of said chains, a bolt shiftable in the other of said bores andhaving a sleeve adapted to engage a pivot of the other chain, and aspring in the last said bore adapted to hold the transverse bar inengagement with the two pivots, supporting discs for the printed sheeton said bars, said discs being axially shiftable on said bars andadapted to support the printed sheet at places free from printing bydisplacing said bars in thedirection of movement of the chains and byshifting said. discs transversely to the direction of the chains.

RUDOLF s'riissL

